[QA] Add a new Test::Sanity::Failing scenario that always fails

Signed-off-by: Rémy Coutable <remy@rymai.me>

qa/qa.rb

@@ -98,6 +98,7 @@ module QA
       end
 
       module Sanity
+        autoload :Failing, 'qa/scenario/test/sanity/failing'
         autoload :Selectors, 'qa/scenario/test/sanity/selectors'
       end
     end

qa/qa/scenario/test/sanity/failing.rb

+# frozen_string_literal: true
+
+module QA
+  module Scenario
+    module Test
+      module Sanity
+        ##
+        # This scenario exits with a 1 exit code.
+        #
+        class Failing < Template
+          include Bootable
+
+          tags :failing
+        end
+      end
+    end
+  end
+end

qa/qa/specs/features/sanity/failing_spec.rb

+# frozen_string_literal: true
+
+module QA
+  context 'Sanity checks', :orchestrated, :failing do
+    describe 'Failing orchestrated example' do
+      it 'always fails' do
+        Runtime::Browser.visit(:gitlab, Page::Main::Login)
+
+        expect(page).to have_text("These Aren't the Texts You're Looking For", wait: 1)
+      end
+    end
+  end
+end